Can you please explain how to get the answer. I don't understand. I will mark you brainliest!!

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4